feat: Add and update table for ACL (#3120)

[KATO-Hiro]

close #3120

Summary by CodeRabbit

Release Notes

• New Features

  • Added support for ACL Beginner and ACL Contest 1 contests.
  • Added six new ACL Contest 1 problems (A–F): Reachable Towns, Sum is Multiple, Moving Pieces, Keep Distances, Shuffle Window, and Center Rearranging.

• Documentation

  • Enhanced implementation guide with pre-implementation checklist, expanded test-driven development guidance, and clarified design patterns for contest providers.

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[coderabbitai]

Walkthrough

The pull request extends the contest management system to support ACL Beginner and ACL Contest 1 by introducing new provider classes, registering contest type mappings, adding problem task data, and establishing comprehensive test coverage for these new contest providers.

Changes

Cohort / File(s)	Summary
Contest Type System src/lib/utils/contest.ts, src/test/lib/utils/test_cases/contest_type.ts	Added acl1 contest prefix mapping to ARC_LIKE category and corresponding test case to verify proper contest classification.
Provider Implementation src/lib/utils/contest_table_provider.ts	Introduced two new provider classes (ACLBeginnerProvider, ACLProvider) filtering by contest_id abl and acl1 respectively; reorganized ACL provider grouping to consolidate legacy AclPractice with new providers into unified Acl group.
Problem Data prisma/tasks.ts	Added six new ACL1 problem tasks (acl1_a through acl1_f) with contest metadata and problem indices, covering problems A–F with associated titles and names.
Test Coverage src/test/lib/utils/contest_table_provider.test.ts, src/test/lib/utils/test_cases/contest_table_provider.ts, src/test/lib/utils/test_cases/contest_type.ts	Extended test suite with dedicated test cases and mock data for ACLBeginnerProvider and ACLProvider, including filtering logic validation, metadata verification, and table generation scenarios.
Documentation docs/guides/how-to-add-contest-table-provider.md	Updated implementation guide with pre-implementation checklist phase, expanded TDD guidance, detailed pattern tables for three implementation patterns, and augmented sections on complex multi-concept providers with edge-case considerations.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Poem

🐰 New contests hop into view,
ACL courses, both fresh and true!
Providers dance in organized rows,
With tests that bloom and data that flows,
The table grows richer, as our guide shows! 📚✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the primary changes: adding new ACL-related contest entries and updating the ACL table documentation and configuration.
Linked Issues check	✅ Passed	The PR implements the requested feature to add ARC-like related contests to the ACL table by introducing ACLBeginnerProvider, ACLProvider, and corresponding test coverage.
Out of Scope Changes check	✅ Passed	All changes are directly related to adding and updating ACL table functionality; no unrelated modifications detected.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch #3120

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[KATO-Hiro]

LGTM